The Puritans were experts in endowing all areas of life with deep religious significance. In the wake of the Reformation, Puritans took religious life from the convents, monasteries, and priories and placed it firmly in the home, the marketplace, and the place of business. Puritans became renowned for their hard work and business acumen, and they always maintained that their worldly success was a sign of God's favor and that they were part of the elect, who would go to heaven on the Day of Judgment.
As with all Protestants, Puritans didn't believe that marriage was a sacrament—a physical, outward sign of God's grace—the reason being that there was no such explicit warrant in Scripture. Nevertheless, they did regard marriage as a very special institution, one where the love between a husband and wife was sanctified.
It is this attitude toward married love which is prominently on display in "To My Dear and Loving Husband." Puritans, such as Anne Bradstreet, would never express themselves in such a heartfelt gush of emotion toward a mere lover, as secular poets of the time often did. The object of the speaker's love is her husband, joined together with her in a bond of holy matrimony. Theirs is a permanent commitment made in the presence of God; their love is truly sanctified, taking it out of the realm of the worldly and into the sublime.